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LAN8742A-CZ
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LAN8742A-CZ

Product Overview

Category

The LAN8742A-CZ belongs to the category of Ethernet physical layer transceivers.

Use

It is primarily used for connecting devices to an Ethernet network, enabling communication between them.

Characteristics

  • Supports 10/100 Mbps data rates
  • Compliant with IEEE 802.3 and 802.3u standards
  • Low power consumption
  • Integrated termination resistors
  • Robust performance in noisy environments

Package

The LAN8742A-CZ comes in a small form-factor package, making it suitable for space-constrained applications.

Essence

The LAN8742A-CZ is an essential component for establishing reliable Ethernet connections in various electronic devices.

Packaging/Quantity

This product is typically packaged in reels or trays, with varying quantities depending on the manufacturer's specifications.

Specifications

  • Supply voltage: 3.3V
  • Operating temperature range: -40°C to +85°C
  • Interface: MII (Media Independent Interface)
  • ESD protection: ±8kV HBM (Human Body Model)
  • Power consumption: <150mW (typical)

Detailed Pin Configuration

The LAN8742A-CZ has the following pin configuration:

  1. VDDIO - Power supply for I/Os
  2. TXD0 - Transmit Data 0
  3. TXD1 - Transmit Data 1
  4. TX_EN - Transmit Enable
  5. TX_CLK - Transmit Clock
  6. CRS_DV - Carrier Sense/Data Valid
  7. RXD0 - Receive Data 0
  8. RXD1 - Receive Data 1
  9. RX_ER - Receive Error
  10. RX_CLK - Receive Clock
  11. MDIO - Management Data I/O
  12. MDC - Management Data Clock
  13. RESET - Reset
  14. VDDA - Analog power supply
  15. VDDD - Digital power supply
  16. GND - Ground

Functional Features

  • Auto-negotiation for speed and duplex mode
  • Link status detection and reporting
  • Energy Efficient Ethernet (EEE) support
  • Loopback mode for diagnostics
  • Wake-on-LAN functionality
  • Integrated LED drivers for link/activity indication

Advantages and Disadvantages

Advantages

  • Compact size suitable for space-constrained applications
  • Low power consumption for energy-efficient designs
  • Robust performance in noisy environments
  • Supports various Ethernet standards

Disadvantages

  • Limited data rate compared to higher-speed alternatives
  • Requires external magnetics for proper operation

Working Principles

The LAN8742A-CZ operates by converting digital signals into analog signals suitable for transmission over an Ethernet network. It utilizes the MII interface to communicate with the host device and manages the negotiation of speed and duplex mode.

Detailed Application Field Plans

The LAN8742A-CZ is widely used in various applications, including but not limited to: - Industrial automation systems - Home networking devices - Automotive electronics - Internet of Things (IoT) devices - Embedded systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LAN8742A-CZ include: - LAN8720A-CZ - LAN8720B-CZ - LAN8720C-CZ - LAN8720D-CZ

These models offer similar functionality and characteristics, providing flexibility in choosing the most suitable option for specific applications.

In conclusion, the LAN8742A-CZ is a versatile Ethernet physical layer transceiver that offers reliable connectivity and robust performance. Its compact size, low power consumption, and compliance with industry standards make it a popular choice in various electronic devices across different industries.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de LAN8742A-CZ en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of LAN8742A-CZ in technical solutions:

  1. Q: What is LAN8742A-CZ? A: LAN8742A-CZ is a highly integrated Ethernet physical layer transceiver (PHY) designed for industrial and automotive applications.

  2. Q: What are the key features of LAN8742A-CZ? A: The key features of LAN8742A-CZ include support for 10/100 Mbps data rates, MII/RMII interfaces, low power consumption, and robust EMC performance.

  3. Q: How can I interface with LAN8742A-CZ? A: LAN8742A-CZ supports both MII (Media Independent Interface) and RMII (Reduced Media Independent Interface) interfaces, allowing easy integration with various microcontrollers or SoCs.

  4. Q: Can LAN8742A-CZ be used in industrial applications? A: Yes, LAN8742A-CZ is specifically designed for industrial applications and offers enhanced reliability, extended temperature range, and ESD protection.

  5. Q: Does LAN8742A-CZ support Power over Ethernet (PoE)? A: No, LAN8742A-CZ does not support PoE. It is a PHY transceiver and requires an external power source.

  6. Q: What is the operating voltage range of LAN8742A-CZ? A: LAN8742A-CZ operates from a single 3.3V power supply, making it compatible with most common microcontrollers and SoCs.

  7. Q: Can I use LAN8742A-CZ in automotive applications? A: Yes, LAN8742A-CZ is suitable for automotive applications and complies with AEC-Q100 Grade 2 standards.

  8. Q: Does LAN8742A-CZ support Wake-on-LAN (WoL) functionality? A: Yes, LAN8742A-CZ supports Wake-on-LAN functionality, allowing the device to be remotely powered on from a low-power state.

  9. Q: What is the maximum cable length supported by LAN8742A-CZ? A: The maximum cable length supported by LAN8742A-CZ depends on the data rate and cable quality but typically ranges from 100 to 150 meters.

  10. Q: Are there any evaluation boards or reference designs available for LAN8742A-CZ? A: Yes, Microchip provides evaluation boards and reference designs for LAN8742A-CZ, which can help in the development and testing of your application.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.